Pesticides for Powdery Mildew (Peaches and Nectarines)
| Stage of Development: Husk Fall | ||||||
|---|---|---|---|---|---|---|
| Recommended Product Choices | Grp1 | Amount per | REI2 | PHI3 (days) | Precautions and Notes | |
| Ha | Acre | |||||
| sulphur (Cosavet DF Edge 31869, Kumulus 18836) | M2 | 7.0 kg | 2.8 kg | 24 h | 1 | Apply at husk fall and again at 2 weeks. |
| quinoxyfen (Quintec) 29755 | 13 | 500 mL | 200 mL | 12 h | 7 | Apply before visible symptoms, and at 10-14 day intervals. Do not make more than 2 consecutive applications. |
| myclobutanil (Nova 40WP) 22399 | 3 | 340 g | 140 g | 12 h – 12 days | 1 | Limit use of group 3 fungicides (Indar, Nova, Topas, Jade, Tilt, Quash) to 2 sprays/season. Rotate with fungicides from different groups. 12 days REI for thinning. |
| penthiopyrad (Fontelis) 30331 | 7 | 1.0-1.75 L | 405-709 mL | 12 h | 0 | Do not apply more than 2 times per season. Use high rate for high disease pressure. |
| boscalid + pyraclostrobin (Pristine WG) 27985 | 7 + 11 | 750 g - 1 kg | 304 g - 405 g | dry – 12 days | 0 | Limit sprays of class 11 fungicides to 2 per season for resistance management. 10 days REI for thinning. |
| trifloxystrobin (Flint) 30619 | 11 | 140-280 g | 57-113 g | 12 h – 4 days | 1 | Suppression only. Use the higher rate for high disease pressure. Limit sprays of Group 11 fungicides (Flint, Cabrio, Pristine) to 2 per season. 4 days REI for thinning. |
| mineral oil (Purespray Green) 27666 | NC | 10 L | 4 L | 12 h | 0 | For suppression of powdery mildew, apply in a minimum of 1000 L water/ha at 10-14 day intervals. Do not use in combination with or within 14 days of sulphur or captan. |
| potassium bicarbonate (MilStop) 28095 | NC | 2.8-5.6 kg | 1.1-2.2 kg | 4 h | 0 | Suppression only. Do not mix with other pesticides or fertilizers. |
| metrafenone (Vivando) 29765 | U8 | 750 mL - 1.12 L | 304 - 453 mL | 12 h | 7 | Apply prior to onset of disease and at 14-21 day intervals. Maximum of 2 sprays/season. |
| metconazole (Quash 30402) | 3 | 245-280 g | 99-113 g | 12h - 9 days | 14 | Suppression of powdery mildew only. Maximum one application/season. REI of 9 days is for thinning. |
| fluopyram + trifloxystrobin (Luna Sensation) 32107 | 7+11 | 300-400 mL | 121-162 mL | 12 h | 1 day | Use higher rate for high disease pressure. Rotate with fungicides from other groups. Limit use of group 11 fungicides to 2 applications per season. |
| Notes: Rotate fungicides from different groups for resistance management. | ||||||
Stage of Development: Husk Fall
Powdery Mildew (Peaches and Nectarines)
1Group number for resistance management. NC = not classified.
2Re-entry interval on the label. An asterisk(*) indicates that no re-entry is shown on the label, but the WorkSafe BC re-entry interval may apply and is shown.
3Pre-harvest interval. Note: always read and follow the directions on the pesticide label.